chore: Update docs/dyn index (#1254)

This PR was generated using Autosynth. 🌈

Synth log will be available here:
https://source.cloud.google.com/results/invocations/7cfae086-7c0e-4c68-be69-9f233baaac6a/targets

- [ ] To automatically regenerate this PR, check this box.

Author: yoshi-automation

docs/dyn/index.md

@@ -201,6 +201,7 @@
 * [v1](http://googleapis.github.io/google-api-python-client/docs/dyn/cloudbuild_v1.html)
 * [v1alpha1](http://googleapis.github.io/google-api-python-client/docs/dyn/cloudbuild_v1alpha1.html)
 * [v1alpha2](http://googleapis.github.io/google-api-python-client/docs/dyn/cloudbuild_v1alpha2.html)
+* [v1beta1](http://googleapis.github.io/google-api-python-client/docs/dyn/cloudbuild_v1beta1.html)
 
 
 ## cloudchannel
@@ -451,6 +452,10 @@
 * [v1](http://googleapis.github.io/google-api-python-client/docs/dyn/firebaserules_v1.html)
 
 
+## firebasestorage
+* [v1beta](http://googleapis.github.io/google-api-python-client/docs/dyn/firebasestorage_v1beta.html)
+
+
 ## firestore
 * [v1](http://googleapis.github.io/google-api-python-client/docs/dyn/firestore_v1.html)
 * [v1beta1](http://googleapis.github.io/google-api-python-client/docs/dyn/firestore_v1beta1.html)

synth.metadata

@@ -4,7 +4,7 @@
       "git": {
         "name": ".",
         "remote": "https://github.com/googleapis/google-api-python-client.git",
-        "sha": "1b1171d09d4c39542e0749eefb1b0bc7b38a9d6a"
+        "sha": "c518472e836c32ba2ff5e8480ab5a7643f722d46"
       }
     },
     {